What our friend, the Holy Spirit, does...

.... the (Holy Spirit’s) work has three aspects. In the first place he makes and keeps us conscious—sometimes vividly conscious, always conscious to some extent, even when the perverse part of us prompts us to deny this consciousness—that we are God’s children by free grace through Jesus Christ. This is his work of giving faith, assurance and joy. In the second place, he moves us to look to God as to a father, showing toward him the respectful boldness and unlimited trust that is natural to children secure in an adored father’s love. This is his work of making us cry ‘Abba Father’…In the third place, he impels us to act up to our position as royal children by manifesting the family likeness (conforming to Christ), furthering the family welfare (loving the brethren), and maintaining the family honor (seeking Gods glory). This is his work of sanctification.”
-- J I Packer, Knowing God

And, before we grieve him in his 3rd work... we have always grieved him in the first two works... i.e. we only don't want to behave like God's child when we aren't convinced of His love --RP